BAPI's for create,update,delete

Hi all,

I am working on the scenario like Jdbc to SAP.If it is Cretae i am using Create BAPI.If it is update I am using Change BAPI.I did three different mappings for 3 BAPI's.Now How can i check the Jdbc data(i.e whether it is cretae or update or delete) in BPM and how can i add 3 different interface mappings in BPM.

Plz suggest me about this issue.

Thanks,

sekhar.